Four-way control valve



FIG. 1 is a perspective view of a four-way control valve showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the figures are included for the purpose of illustrating environment and forms no part of the claimed design. 

CLAIM The ornamental design for a four-way control valve, as shown and described. 